They could be. You would need to see the birth certificates to confirm that or
find them on a census listed within the same family and with the same age.
With unusual surnames it would be a reasonably safe bet - but by no means
certain as they may not be born on the same day. For example I have in Mar Qtr
1913 a 'Jane Halton' and a 'Mary Halton' both have a mothers maiden name
'Wood' but they are not twins - the mothers are sisters who married
cousins, they had the babies within days of each other in the same registration
district the fathers went together to register the births so the births had the
same Volume and Page numbers.
With SMITH and other common surnames you would need to order the certificates
and specify other details such as both parental names to confirm they are born
in the same place and on the same day. Then the actual certificates will have
times of birth and that would confirm they are twins.
I made this mistake with research into a McDonnell Family in the 1860's - we had
confirmed using the census - when a problem arose the birth certificates, were
finally ordered, they had different mothers (same forename but different maiden
names) although the fathers name was the same, it was actually two unrelated men
with the same name, living in the same area of Hulme. Not confirming those
births immediately meant three researchers spent two years tracing unrelated
families and only discovered the error when confronted with the father dying
twice within a year!
[mailto:email@example.com]On Behalf Of gllykh
Sent: 30 October 2010 01:33
Subject: [LAN] BIRTH CERTIFICATES
Whilst checking the Lancashire BMD entries ,I came across two girls both
last name Smith with the same reference number. I believe that this would
indicate that they were twins,am I correct?