Prussian chivalric order for women
The Order of Louise (German: "Luisen-Orden") was founded on 3 August 1814 by Frederick William III of Prussia to honor his late wife, the much beloved Queen Louise ("née Luise Auguste Wilhelmine Amalie, Herzogin zu Mecklenburg-Strelitz"). This order was chivalric in nature, but was intended strictly for women whose service to Prussia was worthy of such high national recognition. Its dame companion members were limited to 100 in number, and were intended to be drawn from all classes.
Though the Prussian king was technically the "Sovereign of the Orders" of the realm, the Chief of the Order of Louise was the reigning queen. Daughters in the royal family were invested with this order "in lieu" of the Order of the Black Eagle, Order of the Red Eagle Grand Cross, Prussian Crown Order First Class, and Royal House Order of Hohenzollern that were reserved for the sons.
The Order of Louise was renewed with each successive monarch. It was issued from its founding in 1814 (during the reign of Friedrich Wilhelm III) and renewed in 1850 (during the reign of Friedrich Wilhelm IV), in 1865 (during the reign of Wilhelm I), and in 1890 (during the reign of Wilhelm II).
Original statutes.
The text of the original royal proclamation that created the Order roughly translates as follows:
When the men of our brave armies bled for the homeland, you found relief in the maintaining care of the women. Faith and hope gave the mothers and daughters of the country the power… for the grand purpose (of the nation). It is impossible to honor or (decorate them enough) for what they have accomplished; but We find it justified to lend them an honor, whose (contributions) are especially acknowledged. We decree therefore hereby following: 
1. The honor shall bear the meaningful name: 
L u i s e n - O r d e n
Establish that we with this, a small, black-enameled golden cross. The (center medallion) on both sides will be of sky blue enamel; with the letter “L” (on the obverse), surrounded by a wreath of (seven) stars; and on the (reverse) the year “1813/1814”. 
2. This order is worn (suspended from) a bow of the white ribbon of the Iron Cross (and shall be worn) on the left breast. 
3. The award (will be bestowed) without consideration of social position or rank; however only such persons can receive it, are, who belong to the homeland through birth or marriage, or otherwise nationalized (citizens). 
4. The number (of members) is restricted to one hundred. 
5. To its selection let's decree hereby a Capitel, which, under the chair of the woman princess Wilhelm Königl. Highness, out of four women …
6. The Capitel will consider candidates, of the feminine sex, from all provinces of the nation, carefully test their credentials, out of which they will decide the worthiest, select up to the available / vacant number (of memberships) and indicate them to Us (the king and emperor) confirmation being specifically reserved for Us. The bestowal / conferral of the award results then, after Our confirmation, under the signature of the Princess Wilhelm Königl. Highness. 
7. We hereby order the management of the membership to the (wife of) field marshal count v. d. Gröben. 
8. Regarding the loss of the order: We will decide, after considering the expert opinions of the Capitels Allerhöchstselbst, if removal / expulsion should occur, … given general directions, the loss of the order and medal will follow.
Classes of membership and insignia.
At its initial creation in 1814, the Order was only available in one class. A second class was added during the reign of Wilhelm I.
Dames, First Class, wore the black-enameled cross with its blue-enameled, medallion centerpiece, suspended from a predominantly white ribbon, with three black stripes, as tied in a bow. Though the statutes indicate that the badge was to be worn on the left breast, many period portraits show the members wearing the badge on or at the left shoulder of their dresses.
Dames, Second Class, wore a similarly-designed silver cross, minus the black enamel, which was also worn suspended from the white and black bow. The "Prussian State Handbook of 1907" indicates further variants and subsets of the Second Class of the order: II.1 with silver crown, II.1 (without crown), and II.2.
Recipients.
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References.
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