The McKenna Family has several graves in First Calvary Cemetery Brooklyn NY (by the Firehouse)A large group are in Section 9 Plot 625.
Only listing the immigrants who are from Co Tyrone Ire. It says so on the 7' h 5' w dark grey stone with the cross on top (facing firehouse).
Ann McKenna died 1867 January 7th age 73 b abt 1794 imm abt 1861 (6 yrs YS before death) John McKenna died 1876 Aug 7th age 48-50 b Ire abt 1826 imm abt 1846 (30 yrs US before death William mcKenna died 1877 Oct 4th age 40 b Ire abt 1837 imm abt 1859 (18 yrs US) Henry McKenna died 1883 May 23 age 50 b abt 1823 Ire imm abt 1858 in US 25 last 18 NY Mary Smith (nee McKenna?)died 1887 November 15th. abt 1815 b Ire age 70 imm abt1837 in US 50 yrs Francis J. McKenna died 1892 April 18 age 62 b Ire abt 1862 Ann McKenna died 1893 July 11 age70 b Ire abt 1859 imm abt 1861 in US 32 yrs Powerison Margaret (nee McKenna?) 1898 June 29 age 85 b abt 1824 (wrong surname, no records) Kelsey Elizabeth (nee McKenna) d 1909 October 12th age 70 b abt March 1830 imm abt 1859in US 50 yrs McKenna Julia (nee Brown) died 1915 December 15 b Ire Sept 1833 McKenna Ellen (nee Horan) Kelly died 1918 Oct 26 b Ire May 6 1850 50 yrs in US abt 1868 Hayden, Michael P. died 1961 march 4 b Ire abt 1877
The McKenna branch from Co Tyrone bounced between Long Island City Queens NY and Greenpoint Brooklyn NY the Roman Catholic parish was and is St Antony Padua Greenpoint Ave.
I'll be happy to toss around names and dates if you think you see something familiar.Thanks for your time & trouble.