Frelinghuysen's home state was apparently New York in 1844. See The Journal of the Senate for February 12, 1845. Also note that Frelinghuysen was President of New York University in 1844. There is some contradictory evidence in favor of a New Jersey residency: the National Archives gives his home state as New Jersey and the Journal of the Senate notes that Vermont's electors believed Frelinghuysen to be a New Jersey resident. Frelinghuysen was a New Jersey native and his political career had largely been conducted in New Jersey.
Robert L. Schuyler, "Polk and the Oregon Compromise of 1846." Political Science Quarterly 26.3 (1911): 443-461 online.
loc.gov
memory.loc.gov
Frelinghuysen's home state was apparently New York in 1844. See The Journal of the Senate for February 12, 1845. Also note that Frelinghuysen was President of New York University in 1844. There is some contradictory evidence in favor of a New Jersey residency: the National Archives gives his home state as New Jersey and the Journal of the Senate notes that Vermont's electors believed Frelinghuysen to be a New Jersey resident. Frelinghuysen was a New Jersey native and his political career had largely been conducted in New Jersey.