1871 LANKSHEARs arrive in USA - Jacob(?) and Emily with Frank 

From http://www.castlegarden.org/index.html
Also Steve Morse's newest One Step "Searching the Castle Garden  Database in One Step" at http://www.stevemorse.org/ellis/cg.html.

see Lankshear in USA

JACOB LANKSHEAR Laborer 24 M 1871-04-17 England City Of Brussels
EMILY LANKSHEAR Wife 24 F 1871-04-17 England City Of Brussels
FRANK LANKSHEAR Infant 800 M 1871-04-17 England City Of Brussels

JACOB LANKSHEAR Occupation Laborer 
Age 24  Sex M Literacy U 
Arrived 1871-04-17 
Origin England Port Liverpool 
Last Residence Destination USA Plan Unknown 
Ship City Of Brussels Passage Unknown

This is only time we see Frank - he is not on 1880 census so presume died as infant

FreeBMD has his birth  Frank Lankshear Birth Dec 1870  Langport Vol 5c-423