), ▁U . S . ▁sen ator ▁from ▁Missouri , ▁serving ▁ 1 8 2 1 – 1 8 3 1 ▁ ▁David ▁Bart on ▁( author ) ▁( born ▁ 1 9 5 4 ), ▁American ▁author , ▁evangel ical ▁minister , ▁and ▁political ▁activ ist ▁ ▁David ▁K . ▁Bart on ▁( born ▁ 1 9 2 7 ), ▁American ▁rad ar ▁systems ▁engineer ▁ ▁David ▁Walker ▁Bart on ▁( 1 8 0 1 – 1 8 6 3 ), ▁Virginia ▁politician ▁ ▁David ▁Bart on ▁( football er ) ▁( born ▁ 1 9 5 9 ), ▁English ▁footballer ▁ ▁David ▁Bart on ▁( ling u ist ) ▁( born ▁ 1 9 4 9 ), ▁British ▁lingu ist <0x0A> </s> ▁Frederick ▁IX ▁of ▁Brandenburg ▁( 2 2 ▁March ▁ 1 5 8 8 ▁in ▁C öll n ▁– ▁ 1 9 ▁May ▁ 1 6 1 1 ▁in ▁S onnen burg , ▁Pr uss ia ▁( now ▁S ło ń sk , ▁Poland )) ▁was ▁a ▁Mar gra ve ▁of ▁Brandenburg . ▁ ▁Life ▁▁ ▁Frederick , ▁a ▁member ▁of ▁the ▁house ▁of ▁H oh enz oll ern , ▁was ▁a ▁son ▁of ▁the ▁Elect or ▁John ▁George ▁of ▁Brandenburg ▁( 1 5 2 5 – 1 5 9 8 ) ▁from ▁his ▁third ▁marriage ▁to ▁Elisabeth ▁( 1 5 6 3 – 1 6 0 7 ), ▁daughter ▁of ▁Prince ▁Jo achim ▁Ernest ▁of ▁An halt . ▁ ▁Frederick ▁was ▁educated ▁in ▁Frankfurt ▁and ▁T üb ingen ▁and