On 12 Nov 1744 William Bateman 1st Viscount Culmore (age 49) died in Paris [Map]. His son John Bateman 2nd Viscount Culmore (age 23) succeeded 2nd Viscount Culmore, 2nd Baron Culmore in Londonderry. Elizabeth Sambroke Viscountess Bateman (age 19) by marriage Viscountess Culmore.

On 02 Mar 1802 John Bateman 2nd Viscount Culmore (age 80) died without issue. Viscount Culmore and Baron Culmore in Londonderry extinct.