Numerous other proposals were issued from the visionary, amongst these was a plan to link the River Liffey and River Shannon by a series of canals. Descriptions of his schemes might be seen as exaggeration or distortion by their dubious authorities, but records of advertisements placed by Poekrich support the number of unrealised proposals. He also failed in his application to become Master of the Choristers of Armagh Cathedral. Unmarried until he was 50, Margaret White became his wife in 1745. She sailed from England with the actor Theophilus Cibber, apparently eloping and fleeing debt, and died in a shipwreck on the Scottish coast in 1758. He toured England with his musical glasses since about 1756; while staying in London in 1759, he died in a fire. Pockrich eventually found success with his performances of his "musical glasses" and is credited with their invention in 1741; he named the instrument an "angelic organ". His decrepit rooms were given over to development of his design and performance of it. His early method of playing, using wooden sticks, is comparable to a similar instrument, the 'glassspiel' or 'verrillon', designed a few years earlier on known principles. His 'virtuoso' performances, accompanied by a singer, received good notices, and reported to have been a popular act. He toured around England and Ireland. His repertoire included works by Handel. The technique he used involved stroking the glass with sticks, but Franklin said he later switched to the 'wet-finger-around-the-wine-glass' method. One popular performance was "Tell me, lovely Shepherd", sung by a Miss Young. He published a collection of poetry, his "Miscellaneous Works" appearing in 1750. The instrument was adopted by Gluck, who presented it on 23 April 1746 as "a concerto on 26 drinking-glasses tuned with Spring water", and performances were popular for half a century. His pupils continued after the death of the originator, a performance in 1760 by one Anne Ford is mentioned in a short notice by Flood. Forde wrote an instruction manual and toured Europe and England. Pilkington gave a description of Pockrich constructing an instrument, simulating a dulcimer, during a meeting at his home; by hammering pins and wire on the table, the visitor laid his head to hear his request for "Black Joke". Poekrich is best remembered for the popularisation of musical glasses, via his promotion and influence, that he discovered in the later years of his life.