From Ros: Jonathan Jenyns is my husband's second great grandfather.

Emigrated to Victoria, Australia on "Queen of the East" Sep 1854, page 429 all listed on lines under #85;

JENYNS JOHN (sic) Draper
JENYNS ALICE Wife
JENYNS LIZZIE Child (died 1928 aged 77)
JENYNS JEFRIE (?) Infant (William?)

Also :

DAWKINS JUDITH Married Woman; line under #85, with above (mother of Alice Jenyns)

DAWKINS JONATHAN Carpenter; adult, line #86
DAWKINS WILLIAM (occupation?), adult, line #87 not numbered.

BDM Vic

Death 1857/6828 ; Jenyns; William, born Cambridge, England, aged 4, son of Jonathan and Alice

Birth 1858/7698 P'Land; Jenyns, Esther Mary, to Jonathan and Alice (Dawkins).

and, not on BDM;

Birth 1855 Portland, Walter Jenyns.

...

Death 1903/12827 Carlton North; Jenyns, Jonathan, aged 78, son of Thomas Jenyns and Mary Webb.

The Argus (Melbourne) Sat 12 Dec 1903

JENYNS.—On the 11th December, at his residence, 583 Lygon-street, Prince's Hill, North Carlton, Jonathan, the dearly beloved husband of the late Alice Jenyns, and father of Lizza and Walter Jenyns, and Mrs. E. G. T. (Esther) Atkinson, aged 78 years.

The Age (Melbourne Vic) Sat 12 Dec 1903

JENYNS.—The Friends of the late Mr. JONATHAN JENYNS are respectfully invited to follow his remains to the place of interment, in the Melbourne General Cemetery. The funeral is appointed to leave his residence, 583 Lygon-street, North Carlton...

...

Kalgoorlie Miner (WA) Thu 27 Apr 1911 (part article)

Australia can turn out pretty well every variety of product, and among them may be numbered claimants to vast estates in England. More than one Victorian has put forward a claim to the famous Jenyns estate, now held in moiety by Earls Beau champ and Howe.

...

Note:

Is there a family connection between Mary Jenyns (Webb) mother of Jonathan Jenyns who married Alice Dawkins,

and Alice Pigott (Webb), mother of Judith Dawkins (Pigott), and grandmother of the same Alice who married Jonathan Jenyns.

Could Mary and Alice be Webb relatives, they are all from the Cambridge area.