Latvian language
The Middle dialect is spoken in central and Southwestern Latvia. Kursenieki language, which used to be spoken along Curonian Spit, is closely related to the varieties of middle dialect spoken in Courland. The dialect is divided into the Vidzeme variety, the Curonian variety and the Semigallian variety. The Vidzeme variety and the Semigallian variety are closer to each other than to the Curonian variety, which is more archaic than the other two. There are three intonations in the Middle dialect. In the Semigallian variety, "ŗ" is still used. Standard Latvian is based on the middle dialect.
Livonian language
Livonian has for centuries been thoroughly influenced by Latvian in terms of grammar, phonology and word derivation etc. The dative case in Livonian, for example, is very unusual in a Finnic language. There are about 2,000 Latvian and 200 German loanwords in Livonian and most of the German words were adopted through Latvian. Latvian, however, was influenced by Livonian as well. Its regular syllable stress based on Livonian is very unusual in a Baltic language. In both languages the letter "h" is silent, unlike other Finnic and Baltic languages. Especially as of the end of the nineteenth century there was a great deal of contact with Estonians, namely between (Kurzeme) Livonian fishers or mariners and the Estonians from Saaremaa or other islands. Many inhabitants of the islands of Western Estonia worked in the summer in Kurzeme Livonian villages. As a result, a knowledge of Estonian spread among those Livonians and words of Estonian origin also came into Livonian. There are about 800 Estonian loanwords in Livonian, most of which were borrowed from the Saaremaa dialect.1st Article of the Universal Declaration of Human Rights