I found Phillip, Dorothy's and William's cards.There was a bit of confusion in the cards.Dorothy's card says she was the widow of Phillip Koch.It says she was buried at Locust Hills.I couldn't find her record at Locust Hills. Phillip didn't die for another 5 years and he is buried at New Salem (Camp Ground) Cemetery.Don't know if this helps but this is what I found plus your information.
Descendants of Phillip Koch, Sr.
Generation No. 1
1.PHILLIP2 KOCH, SR.(OLD MAN1)1 was born Abt. 1857, and died 03 Jun 1935 in in his home, RR #5 Old StateRd..He married DOROTHY ELIZABETH ________.She was born Abt. 1868, and died 22 Jul 1930 in 103 Idlewild Dr, Evansville, IN.
More About PHILLIP KOCH, SR.: Burial: New Salem (Camp Ground) Cemetery Residence: RR #5 Old StateRd.
More About DOROTHY ELIZABETH ________: Burial: Locust Hills Residence: 103 Idlewild Dr, Evansville, IN
Children of PHILLIP KOCH and DOROTHY ________ are: i. HELEN3 KOCH1, d. Aft. 16 Dec 1947; m. ROBERT O. THOMPSON.
More About HELEN KOCH: Residence: East St. Louis
ii. ANNA KOCH1, d. Aft. 16 Dec 1947; m. _______ COLEMAN.
More About ANNA KOCH: Residence: East St. Louis
iii. PEARL KOCH1, b. 1900; d. Aft. 16 Dec 1947; m. _______ STEINHEUER.
More About PEARL KOCH: Residence: East St. Louis
iv. MINNIE KOCH1, b. 1877, Buckskin, Indiana; d. Aft. 16 Dec 1947.
More About MINNIE KOCH: Residence: East St. Louis
v. ELFRIEDA KOCH1, d. Aft. 16 Dec 1947; m. ANDREW LANKFORD1.
More About ELFRIEDA KOCH: Residence: Millersburg
vi. JOHN KOCH1, d. Bet. 03 Jun 1935 - 16 Dec 1947. vii. PHILLIP KOCH, JR.1, d. Aft. 16 Dec 1947.
More About PHILLIP KOCH, JR.: Residence: Millersburg
viii. RALPH KOCH1, d. Aft. 16 Dec 1947. 2. ix. WILLIAM O. KOCH, b. Abt. 1889; d. 16 Dec 1947. x. HAZEL ELIZABETH, b. 1896; d. Bef. 03 Jun 1935. xi. GILBERT, d. Bef. 03 Jun 1935. xii. CONRAD, d. Bef. 03 Jun 1935.
Generation No. 2
2.WILLIAM O.3 KOCH (PHILLIP2, OLD MAN1)1 was born Abt. 1889, and died 16 Dec 1947.He married OPAL FARIES1.
More About WILLIAM O. KOCH: Burial: PL Residence: Cleveland, OH
Children of WILLIAM KOCH and OPAL FARIES are: i. GLEN4 KOCH. ii. ROBERT KOCH. iii. ALICE KOCH. iv. LOIS KOCH.
1.Browning Geneology, Evansville, Indiana Area Obituary Search, "Electronic."