How old was Bertha Muzzy Sinclair in…

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Bertha Muzzy Sinclair was 68 in Chip of the Flying U as 'Novel'.

Movie Released: Wed, Nov 29 1939

Bertha Muzzy Sinclair was 57 in Points West as 'Novel'.

Movie Released: Sun, Aug 25 1929

Bertha Muzzy Sinclair was 57 in King of the Rodeo as 'Story'.

Movie Released: Sun, Jan 06 1929

Bertha Muzzy Sinclair was 54 in Chip of the Flying U as 'Novel'.

Movie Released: Sun, Mar 14 1926

Bertha Muzzy Sinclair was 53 in Ridin' Thunder as 'Novel'.

Movie Released: Sun, Jun 14 1925

Bertha Muzzy Sinclair was 53 in Taming the West as 'Novel'.

Movie Released: Sun, Mar 01 1925

Bertha Muzzy Sinclair was 48 in The Galloping Devil as 'Novel'.

Movie Released: Mon, Nov 01 1920

Bertha Muzzy Sinclair was 44 in A Modern Knight as 'Story'.

Movie Released: Fri, Jun 23 1916

Bertha Muzzy Sinclair was 43 in How Weary Went Wooing as 'Story'.

Movie Released: Tue, Sep 14 1915

Bertha Muzzy Sinclair was 42 in Chip of the Flying U as 'Novel, Writer'.

Movie Released: Sat, Aug 29 1914

Bertha Muzzy Sinclair was 42 in When the Cook Fell Ill as 'Story, Screenplay'.

Movie Released: Fri, Jul 31 1914

Bertha Muzzy Sinclair was 42 in Shotgun Jones as 'Writer'.

Movie Released: Mon, Apr 27 1914

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Ages in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages