BLENNERHASSETT, HARMAN Irish American lawyer, was born on Oct. 8 1765. He was educated at Trinity college, Dublin, and in 1790 was called to the Irish bar. In 1796 he married his niece, Margaret Agnew. Ostracised by their families the couple came to America, where Blennerhassett in '798 bought an island in the Ohio river about 2M. below Parkers burg, West Virginia. Here in i8o5 he received a visit from Aaron Burr (q.v.), in whose conspiracy he became interested, furnishing funds for its support, and offering his island as a rendezvous for the gathering of supplies and the training of volunteers. When the conspiracy collapsed, Blennerhassett fled, was twice arrested and remained a prisoner until after Burr's release. He became in turn a cotton planter in Mississippi and a lawyer (1819-22) in Montreal, Canada. After returning to Ireland, he died in the island of Guernsey on Feb. 2 I 83 I.